portfwd.js

var tcp = require("tcp");

var server = tcp.createServer(function (socket) {
    var client;
    socket.addListener("connect", function () {
        client = tcp.createConnection(22);
        client.addListener("receive", function (data) {
            socket.send(data);
        });
        client.addListener("eof", function () {
            client.close();
        });
    });

    socket.addListener("receive", function (data) {
        client.send(data);
    });
    socket.addListener("eof", function () {
        /* Communication complete. */
        triggerCallback();
        socket.close();
    });
});
server.listen(7000, "localhost");